To your question: yes it is. You may find it convenient, but it is definitely manipulating as well. And it really depends on where you see that clothing. Is it on the "buy" page? Ok maybe not so bad. Is it on an advertisement in a flashlight app on your phone after you last googled for something similar on your laptop? Is that still just a convenience, or have we entered territory that is creepy for you yet?

Marketing and advertising has not been tracking all of us _as individuals_ for more than the last couple of decades. How could they possibly have done this in the previous eras of dumb broadcasting and dumb print media? Newspapers can't follow you around in department stores to see what you like and target future ads to _you_ as an individual. They can advertise in places that make more sense, e.g. kids toys on a kids TV channel.

So yes this is new and yes this is manipulation, and this isn't the only way it has to be. We can still have convenience and better advertising without the mass tracking of individuals. But as long as we have people defending the current status quo as you have here, then nothing will change.